The rare isotope helium-3 is one of Earth’s most precious commodities—so precious, in fact, that it might prove profitable to ...

When you think of outer space, you're likely picturing stars, planets and moons. But much of space is filled with clouds of gas, plasma and stardust—known as interstellar clouds.

Despite being one of our key senses, the molecular mechanisms of smell remain poorly understood. Mason Wakely sniffs out the ...

When atmospheric chemists Paul Crutzen and John Birks added smoke into their computer models of nuclear war scenarios, they ...

What once belonged purely to science fiction is steadily becoming part of everyday life. From automation to advanced tech ...

If you've ever taken an introductory astronomy class, you've probably seen the Hertzsprung-Russell (HR) diagram. This graph ...

Long-held assumptions tell us that atoms with the same number of protons, neutrons and electrons are indistinguishable, but ...

While the standard April 15 tax deadline has passed, a significant new window has opened for millions of Americans. Tens of millions of taxpayers may be eligible for refunds or abatements of penalties ...

Antarctic ice contains evidence that Earth entered an interstellar dust cloud more than 40,000 years ago 1. As the Solar ...

It’s not just about Mars. NASA and the European Space Agency (ESA) have missions to the icy moons of Jupiter, and ESA wants ...

The central region of Messier 77 is dominated by an extremely compact and energetic ...